Table of Physical and Chemical Properties and Hazardous Characteristics of Hydrochloric Acid
Chemical name Chinese name: 盐酸 English name: Hydrochloric acid CAS number: 7647-01-0 Hazard code: 81013 Molecular formula: HCl Molecular weight: 36.46 Hazard category: Class 8.1 Acidic corrosive substances UN number: 1789 |
Hazard Overview Health hazards: Exposure to its vapor or smoke can cause acute poisoning, resulting in conjunctivitis, burning sensation in the nasal and oral mucosa, nosebleeds, gingival bleeding, tracheitis, etc. Accidental ingestion can cause gastrointestinal burns, ulcer formation, and may lead to gastric perforation, peritonitis, etc. Contact between eyes and skin can cause burns. Chronic effects: Long term exposure can cause chronic rhinitis, chronic bronchitis, dental erosion, and skin damage Environmental hazards: Harmful to the environment, can cause pollution to water bodies and soil Explosive hazard: This product is non flammable, highly corrosive and irritating, and can cause burns to the human body |
Emergency measures Skin contact: Immediately remove contaminated clothing and rinse with plenty of flowing water for at least 15 minutes. Seek medical attention Eye contact: Immediately lift the eyelids and thoroughly rinse with plenty of flowing water or saline solution for at least 15 minutes. Seek medical attention Inhalation: Quickly leave the scene and move to a place with fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, administer oxygen. If breathing stops, immediately perform artificial respiration. Seek medical attention Ingestion: Rinse mouth with water and drink milk or egg whites. Seek medical attention |
Fire protection measures Hazardous characteristics: Can react with some active metal powders and release hydrogen gas. Encountering cyanide can produce highly toxic hydrogen cyanide gas. Reacts with alkali and releases a large amount of heat. Has strong corrosiveness Harmful combustion products: hydrogen chloride Fire extinguishing method: neutralize with alkaline substances such as sodium bicarbonate, sodium carbonate, hydrated lime, etc. It can also be extinguished with a large amount of water |
Emergency response to leakage Quickly evacuate personnel from the contaminated area to a safe zone, isolate them, and strictly restrict their entry and exit. It is recommended that emergency personnel wear self-contained positive pressure respirators and acid and alkali resistant work clothes. Do not come into direct contact with the leaked material. Cut off the leakage source as much as possible. Minor leakage: Mix sand, dry lime, or soda ash. You can also rinse with a large amount of water, dilute the washing water, and put it into the wastewater system. Massive leakage: Construct embankments or dig pits to contain it. Transfer to a tanker or dedicated collector using a pump, recycle or transport to a waste disposal site for disposal |
Handling and Storage Precautions for operation: Closed operation, pay attention to ventilation. Operate as mechanically and automatically as possible. Operators must undergo specialized training and strictly adhere to operating procedures. It is recommended that operators wear self-priming filter type gas masks (full face masks), rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Keep away from flammable and combustible materials. Prevent steam leakage into the workplace air. Avoid contact with alkalis, amines, and alkali metals. Handle with care during transportation to prevent damage to packaging and containers. Equip with emergency response equipment for leaks. Empty containers may contain residual harmful substances Storage precautions: Store in a cool and ventilated warehouse. The storage temperature shall not exceed 30 ℃, and the relative humidity shall not exceed 85%. Keep the container sealed. It should be stored separately from alkalis, amines, alkali metals, and flammable materials, and avoid mixing storage. The storage area should be equipped with emergency response equipment for leaks and suitable containment materials |
Contact control and individual protection China MAC (mg/m3): 15 Engineering control: Closed operation, pay attention to ventilation. Mechanize and automate as much as possible. Provide safety shower and eye wash equipment Respiratory protection: When there is a possibility of exposure to its smoke, wear a self-priming filter type gas mask (full face mask) or air respirator. It is recommended to wear an oxygen respirator during emergency rescue or evacuation Eye protection: Protective measures have been taken in respiratory system protection Body protection: Wear rubber acid and alkali resistant clothing Hand protection: Wear rubber acid and alkali resistant gloves Other protections: Smoking, eating, and drinking are prohibited at the work site. After work, take a shower and change clothes. Store clothes contaminated with toxic substances separately and wash them for later use. Maintain good hygiene habits |
Physical and chemical properties Content: Industrial grade 36% Appearance and characteristics: Colorless or slightly yellow smoky liquid with a pungent sour taste Solubility: miscible with water, soluble in alkaline solution Melting point (℃): -114.8 (pure) Boiling point (℃): 108.6 (20%) Relative density (water=1): 1.20 Relative vapor density (air=1): 1.26 Saturated vapor pressure (kPa): 30.66 (21 ℃) Main uses: Important inorganic chemical raw materials, widely used in industries such as dyes, pharmaceuticals, food, printing and dyeing, leather, metallurgy, etc Prohibited substances: alkalis, amines, alkali metals, flammable or combustible materials |
Toxicological data No information available |
Transportation information Packaging method: Ordinary wooden box or semi checkered wooden box outside the acid resistant jar or ceramic bottle; Ordinary wooden box or semi checkered wooden box outside glass bottles or plastic drums (cans); Ordinary wooden box outside frosted or threaded glass bottles; Screw mouth glass bottle, iron cap pressed mouth glass bottle, plastic bottle or metal barrel (can), ordinary wooden box outside Transportation precautions: This product is transported by railway using steel tank trucks with rubber lining or special plastic tanks provided by the enterprise. Approval from relevant departments is required before shipment. During railway transportation, the dangerous goods loading table in the "Dangerous Goods Transport Rules" of the Ministry of Railways should be strictly followed for loading. When shipping, the packaging should be intact and the loading should be secure. During transportation, it is necessary to ensure that the container does not leak, collapse, fall, or be damaged. It is strictly prohibited to mix and transport with alkali, amine, alkali metal, flammable or combustible materials, edible chemicals, etc. Transport vehicles should be equipped with leak emergency response equipment during transportation. During transportation, it should be protected from direct sunlight, rain, and high temperatures. When transporting by road, follow the prescribed route and do not stay in residential or densely populated areas |